Moistening attachment for corner-staying machines.



G. H. GROWELL. MOISTENING ATTAGHMENT FOR CORNER STAYING MACHINES.

' APPLICATION rum) 11:13.13. 1913. 1 1 10 38() Patented Sept. 15,1914, 2 SHEETS-SHEET 1. f

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fflar/rgyj A 0. :H. CROWELL. MOISTENING ATTACHMENT FOR CORNER STAYING MACHINES.

APPLICATION FILED FEB. 13, 1913. 1,1 10,380. Patented ept. 15, 1914,.

2 SHBBTS-SHEBT 9,

STATES. PATENT. OFFICE- 4 CHARLES Hi ergo-WELL, or swaivrrsco'r'r, M'AssAeH'UsEr'rs.

MOISTENING TATTACH'MENT FOR umran-swarms macninns.

sp ifi a i or p s s a n Patented Sept. '15, 1914.. Application filed February 13, 1913. Serial No. 748,078 7 v To all whom it may'concern Be it known that 1, CHARLES H. CRowELL, a citizen of the United States, residing at Swampscott, county of Essex, State of Massachusetts, have invented a certain'new and useful Improvement in Moistening Attachments for Corner-Staying Machines, of which the following is a specification, reference being had therein to the accompanying drawings.

' My invention relates to an improvement in corner staying machines of'the kind employed in cutting pieces of stay strip; from a roll of cloth or paper stay strip, and applying them to the corners of boxes.

My object is to provide means in conjunction with the ordinary well known corner staying machine-for regulating the amount of moisture. to be applied to the gummed surface of the stay strip so that the proper amount may be applied to any particular strip, bending the strip to the proper angle ready to be applied to the box corner and keeping it. in moist condition until it has been so applied. a

v The invention consists in certain novel features of construction and arrangement, all as more fully setforth in the following description of a machine embodying my invention and illustrated in the accompanying drawings forming a part hereof. I

The novel features are pointed out and clearly defined in the claims at the close of the specification. In the drawings,Figu-re 1 is a side elevation partly in section of a machine embodying myinvention. Fig.2 is a section on line 22 of Fig. 1, looking-in the direction of the arrows. Fig. 3 is a section enlarged on line 33 of Fig. 1. Fig. 4 is a section enlarged on line 4'4 of Fig. 1. Fig. 5 is a front view in detail of a plunger and anvil showing the position of a box corner and stay strip before they are subjected to pressiire. Fig. 6 is a detail of the moisteningj apparatus showing particularly the device for regulating the amount of moisture tobe applied.

Having reference to the drawings, a ma-' chine of well known form to which the invention has been applied is shown in Fig. 1. It comprises a frame A of usual form and construction, which rests on a standard or support B.

C is the driving pulley and C the shaft. The shaft C which is journaled in the bearifollows that the length .be regulated as desired.

ings 1. eccentrically' connected. at

one end, as. shown at 3,. to; plunger E thereby the lattera. verticafxreciproeating motion. The plungerand the anvil F of the usual fol-ma employed in, applying a corner stay to a corner of? a box are operated in the customary 'er known to: those skilled in: the art, and description of their construction and operation is not therefore necessary. The plunger E 7 is provided with a. suitable 0 which [may be secured thereto in convenient manner as by a bolt 130. The thus se-- cured to the reciprocating plunger operates in conjunction with a suitable die 131 to i ev'er the strip,- all as is clearly shown in n the shaft C is secured a cam 4 which .rotates therewith. A lever 5 which is pivoted at 6 has secured to its upper end a roller 7 which rests against the cam surface 85 of cam 4, and is there retained by means of a spiral spring 8, one end of which is attached to the lever 5, and the other to the frame A. The lower end of the lever 5 is slotted, as shown at 86 Fig. 1. In said slot is placed a sliding block 87 which may be clamped securely at any point in the slot. A connecting pin 88 is set in said block and projects through a corresponding slot 89 in the upper end of the lever 10. As will be clear by varying the position of the block in its slot in the lever 5 the throw of the lever 10 may be varied. As the throw of the lever 10 determines the length of feed of the stay strip as hereinafter explained it of the feed may thus At a point midway of the lever 10, a pawl 12 is pivoted, the free end of which engages the teeth of the ratchet wheel 13 which is secured to the shaft 11. v The shaft '11 which rotates freely in hearings on the .tank is provided with a large roll 14. The

cam surface 85 is so shaped. as to horizontally reciprocate the pawl 12 which in turn operates to give the roll 14 by means of the ratchet 13 an intermittent rotary movement.

I have provided means for feeding and moistening the stay strip by placing an endless tape or apron 17 around the roll 14, and the small roll 18, as plainly shown in Fig. 1. The apron 17 is held closely in contact with the upper half of the periphery of the roll 14 by means of another small roll 19 yieldingly mounted which exerts a yielding pressure against the apron on the surface of the large roll 14 by means of a spring 20. The small rolls 18 and 19' have each a surface speed equal to that of the large roll 14,

the roll 18 being connected with said roll 14 by means of sprockets 21 and 22 and a sprocket chain23. The roll 19 is connected with the roll 14 by means of the gears 24 and 25. See Fig. 2. Inside the container H and to one end thereof are secured springs 97, one'at each side of the container H, but only one of which is shown. On the freeends of said springs 97, is mounted, see Fig. 1 a tension roll 98 which presses against the lower surface of the felt apron thereby operating to take up any slack and keep the apron taut as it travels around the rolls. This mechanism causes the apron to travel uniformly and smoothly, the position of the apron on the rolls being insured and lateral displacement prevented by means of two ribs 26', see Fig. 4, between which said apron travels along the surface of the table or support 27 Tokeep the apron 17 wet so that it will apply moisture to the stay strip G, see Fig. 1 I provide a trough or container H containing water the level of which is indicated at 16. The roll 14 is located partly within this trough or container H so that a large portion of the lower half of the roll 14 is beneath the surface 16 of the water in the container. The container furthermore is of sufficient length so that the small roll 18 may be located just above the surface 16 of the liquid, thereby keeping a large portion of the apron 17 constantly submerged. In order to rid the apron 17 of all surplus moisture I provide a doctor or pressure roll 28 which is pressed against the surface of the apron as it emerges from the liquid. The roll 28 is mounted at the free ends of springs 29 one only of which is shown which are secured rigidly at their lower ends to a rod or shaft 100 mounted in hearings in the lugs or projections 101 which are on the bottom of the container. The shaft 100 has rigidly secured thereto an upwardly projecting lever arm 102. The upper end of this arm is engaged by a screw 103 set in the end of the container above the water level. By setting in the screw 103 it will press against the lever 109 turning the shaft 100 in its bearings and causing the spring 29 to force the doctor roll 28 more firmly against the apron. In this way the pressure of the doctor roll may be varied as desired, and a proper and uniform amount of moisture insured in the apron 17 which is important since it insures a uniform application of moisture to the staystrip G.

A roll K of stay strip of the usual form is secured to the shaft 30 mounted in a bearing 50 in the frame at a point above the roll 14. A tension device comprising a spring 31 secured at one end at '52 to a projection 51 from the frame and provided at its free end seeFig. 1, with a shoe 53 which bears against a pulley 32 on the shaft 30 serves to main tain the proper amountof tension on the tape and to prevent the roll K from overrunning. From the roll K the stay strip Gr passes around a small roll 33 which is located close to the periphery of the roll 14. From this roll the stay strip passes over the apron 17 which passes around the roll 14 and between said apron and the yielding pressure roll 19, thence/through the folding gage 35, see Figs. 1 and 6, and into the stay applying mechanism, of well known construction shown in Figs. 1 and 5, where it is applied to the box corner. It will thus be seen that the stay strip rests for some time in contact with the moist apron '17, thereby enabling the gummed surface of the strip to become well saturated.

The stray strip requires to be subjected to moisture for a proper length of time to give the adhesive time to absorb the mois-' ture, and become properly tempered to adhere effectively. By my device I am enabled to supply the proper moisture and for a proper length of time before the strip is applied to the corner and I am further enabled as hereinafter set forth to vary the moisture and time as required fordifferent kinds or lengths of stay strip and to keep the moistened strip in proper temper until it is applied to the corner. I preferably employ, however stay strip which has been properly prepared by having all resiliency removed along the line of fold. Such a stay strip is fully set forth in my application for Letters Patent filed January 27, 1913, Serial Number 744,308.

After the strip has been moistened by contact with the apron 17 as above described, it passes through the folding gage 35 to shape it to conform to the box corner. This foldinn; gage serves a double purpose for it not only shapes the strip for the box corner, but in connection with the moist apron preserves-the strip in moist condition until it reaches the stay applying mechanism above referred to. The gage 35 is fiat at one end, as shown at 36, see Fig. 3. From this point the sides of the gage gradually converge until it becomes V-shaped in cross section. as shown at 37, see Fig. 4. Beneath the gage is table 27, along the upper surface of which the moist apron 17 travels, the gage being placed just above the apron, see Figs. 3 and 4. I provide gages of different sizes in order to feed various widths of stay strip. As the stay strip enters the fiat end 36 of the gage on the upper surface of the apron 17 the edges of the strip are in contact with the sides 38 of the gage. As the gage gra ally converges to V-shape the strip will be lsided to the acute angle position shown at 39. in

Fig. 4, in readiness to be applied to the right angle corner 40 of a box. It is desirable that. the strip be brought to the acute angle shape in the gage or die to insure its proper application and contact with the square cornered box. While the strip is being folded in the gage the moisture is rising from the Wet apron which is traveling beneath it, thereby constantly supplying moisture to the strip and keeping it properly charged therewith. To hold the gage 35 securely in place I provide it with arms 105 which project horizontally on each side of the gage as shown in Fig. 2, and thefree ends of which are secured by screws 106, or in. other suitable manner, to the top of the side rails 26, see Fig. 4. 4

I have found-in practice that some stay strip requires more moisture to be applied to its gummed surface than other stay strip in order to get the best results.- I have therefore provided means for regulating thev amount of moisture to be applied. In the construction hereinabove described the strip lies in contact with the apron around almost half the periphery of the roll 14, thereby permitting its gummed surface to lie. in contact with the wet apron for a considerable time. In order to arrange the stay strip so that it may be adjusted to come in contact with the wet apron for a less time I have caused the lever 34 to be pivoted on the shaft the roll K around the roll 42 and over the roll 33 and will not come incontact with the wet apron 17 until it passes beneath the roll 19 just before entering the gage 35. For this reason the roll K must be placed above the roll 14 sufiiciently to prevent the strip coming in contact with the apron on the periphery of the roll 14 when the lever arm 34 is swung into the osition shown in Fig. 6. The lever 34 mayo course be placed at any point midway of the positions shown in Figs. 1 and 6 thereby permitting easy and complete regulation of the amount of moisture to be applied to the gummed surface of the strip, as also of the length of time the strip is exposed to the moisture. Corresponding with the lever 34 but at the opposite side of the roll 14 is another lever 340 see Fig. 2 and the rolls 33 and 42 extend between said levers and are journaled in bearings near the free ends thereof asshown in said Fig. 2. The levers 34 and 340 are rigidly connected by a tie rod 341 so that they will move together when swung on their bearings on the shaft 11 as heretofore described.

' To provide means for holding the lever 34 in any position in which it may be placed therewith. This plate is located near the face of the roll 14 and inside the lever 34. In this plate 43 I provide holes 44 radially distributed at equal distances near the periphery of the plate 43 to receive a pin 45 on the lever 34 as shown in Fig. 2. In order to prevent the pin 45 from becoming disengaged I provide a spring 46 which operates to hold the pin securely in place in the hole with which it is engaged. v

While I have described-the means I prefer for holding the lever 34in a given position any well known means may be employed for this purpose. The roll 14 may be varied in diameter as desired, that is, a roll of difierent diameter may be substituted so that although a long strip is run through and applied in the same length of time as a short stri'p, yet the long strip will be as Welland thoroughly moistened and tempered throughout as the short strip.

What I claim is;

1. An attachment for corner staying machines comprising a feed roll, an idler roll, an apron carried by said rolls, a stationary shaping die adjacent the said apron, and by which the strip is folded as it advances, a presser roll between which and the said apron the stay strip passes, and mechanism to cause rotation of the said feed roll to feed the stay strip.

2. In a'stay strip moistening machine, the combination of feed roll, an idler roll, an apron carried by said rolls with a combined shaping die and moisture retainer for shaping and retaining said strip in moistened condition, and feeding mechanism for rotating said apron and causing said stay strip to be fed through said combined shaping die and moisture retainer.

3. In a stay strip moistening machine, the

combination of cutting mechanism, a IIlOlS- a pair of rolls carrying said apron, moisture retaining means for keeping the stay strip in a moistened condition located between one of said rolls and said cutting mechanism, said apron feeding stay strip through said retainer to said cutting mechanism.

.4. In a stay strip moistening machine, the combination of cutting mechanism, means located apart from said cutting mechanism for applying moisture to the stay strip and for feeding it to the cutting mechanism, and means for retaining the strip in a moistened condition between the point of application of moisture to the strip and the cutting mechanism.

5. In a machine of the character described, the combination of a feedroll, an idler roll, an apron carried by said rolls, a combined shaping die and moisture retainer located adjacent the surface of the apron, and means for rotating the rolls to cause stay strip to be fed through the combined shaping die and moisture retainer.

6. An attachment for corner staying machines, ,comprising a shaft for carryung a roll of stay strip, a moisture container, a roll carrying an apron operating therein, a presser roll, a guide for the stay strip pivoted on the shaft of said roll, said guide being movable on the said shaft toward or away from said presser roll to vary the peripheral distance between the presser roll and guide.

7 An attachment for con er staying machines comprising a feed roll, a moisture container within which said roll operates, an idler roll, a table intermediate said feed roll and said idler roll, an apron carried by the said rolls and passing over said table, a shaping die over said apron, a pressing roll to hold the stay strip against the apron, and mechanism to cause rotation of said feed roll to feed the stay strip.

8. An attachment for corner staying machines comprising a shaft for a roll of stay strip, a tension device therefor, a moisture container and a feed roll operating therein, an apron-on said roll, a guide for the stay strip pivoted on the shaft of the said feed roll and adjustable with relation to the periphery of the said roll, a presser roll under which the stay strip passes in contact with said apron, a shaping die adjacent said apron and mechanism for actuating said roll intermittently to feed the stay strip.

9. An attachment for corner staying machines comprising means'for carrying a roll of stay strip, a moisture container and feed roll operating therein, an idler r011, an apron carried by the said feed roll and said idler roll, a table over which the apron passes, a cooperating pressing roll to guide the apron and between which and the apron the stay strip passes, a shaping die with a flat end adjacent said presser roll and gradually converging sides, said shaping die being located above and adjacent said apron, a guide roll around which the stay strip passes on its way to the feed roll, said guide 'roll being mounted between arms pivoted on the shaft of the feed roll and means for securing said arms in any given position of adjustment with relation to the upper half of the periphery of said feed roll for changing the point of contact of the stay strip with the apron, and means for rotating the feed rollto feed the stay strip.

In testimony whereof I aflix my signature, in presence of two witnesses.-

oHAnLEs H. onownm...

Witnesses I WILLIAM A. MACLEon,

GEORGE P. DIKE. 

